Drug delivery device



FIG. 1 is a front view of the drug delivery device of the present invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a "drug delivery device," as shown and described. 